INFO: task kworker/u4:7:4374 blocked for more than 143 seconds. Not tainted 5.15.158-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:7 state:D stack: 0 pid: 4374 ppid: 2 flags:0x00000008 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 wait_on_state fs/btrfs/extent_io.c:868 [inline] wait_extent_bit+0x3e4/0x52c fs/btrfs/extent_io.c:906 lock_extent_bits+0x100/0x1d4 fs/btrfs/extent_io.c:1469 btrfs_finish_ordered_io+0x5d0/0x1660 fs/btrfs/inode.c:3108 finish_ordered_fn+0x20/0x30 fs/btrfs/inode.c:3257 btrfs_work_helper+0x33c/0x1548 fs/btrfs/async-thread.c:325 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 INFO: task syz-executor.4:7385 blocked for more than 143 seconds. Not tainted 5.15.158-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 7385 ppid: 3992 flags:0x00000005 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 io_schedule+0x8c/0x194 kernel/sched/core.c:8484 wait_on_page_bit_common+0x6fc/0xc14 mm/filemap.c:1356 __lock_page+0x8c/0xa8 mm/filemap.c:1648 lock_page include/linux/pagemap.h:625 [inline] btrfs_page_mkwrite+0x5e8/0xde8 fs/btrfs/inode.c:8943 do_page_mkwrite+0x144/0x37c mm/memory.c:2892 wp_page_shared+0x14c/0x398 mm/memory.c:3229 do_wp_page+0x7cc/0x9c4 mm/memory.c:3330 handle_pte_fault mm/memory.c:4639 [inline] __handle_mm_fault mm/memory.c:4756 [inline] handle_mm_fault+0x1bf8/0x3424 mm/memory.c:4854 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x700/0xb60 arch/arm64/mm/fault.c:605 do_mem_abort+0x70/0x1d8 arch/arm64/mm/fault.c:819 el0_da+0x94/0x20c arch/arm64/kernel/entry-common.c:494 el0t_64_sync_handler+0xc0/0xe4 arch/arm64/kernel/entry-common.c:629 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 INFO: task syz-executor.4:7387 blocked for more than 143 seconds. Not tainted 5.15.158-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack: 0 pid: 7387 ppid: 3992 flags:0x00000005 Call trace: __switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5030 [inline] __schedule+0xf10/0x1e48 kernel/sched/core.c:6376 schedule+0x11c/0x1c8 kernel/sched/core.c:6459 wait_on_state fs/btrfs/extent_io.c:868 [inline] wait_extent_bit+0x3e4/0x52c fs/btrfs/extent_io.c:906 lock_extent_bits+0x100/0x1d4 fs/btrfs/extent_io.c:1469 btrfs_page_mkwrite+0x66c/0xde8 fs/btrfs/inode.c:8953 do_page_mkwrite+0x144/0x37c mm/memory.c:2892 wp_page_shared+0x14c/0x398 mm/memory.c:3229 do_wp_page+0x7cc/0x9c4 mm/memory.c:3330 handle_pte_fault mm/memory.c:4639 [inline] __handle_mm_fault mm/memory.c:4756 [inline] handle_mm_fault+0x1bf8/0x3424 mm/memory.c:4854 __do_page_fault arch/arm64/mm/fault.c:505 [inline] do_page_fault+0x700/0xb60 arch/arm64/mm/fault.c:605 do_mem_abort+0x70/0x1d8 arch/arm64/mm/fault.c:819 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:358 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:418 el1h_64_sync+0x78/0x7c arch/arm64/kernel/entry.S:522 __arch_copy_to_user+0x88/0x218 arch/arm64/lib/copy_template.S:90 emit_fiemap_extent fs/btrfs/extent_io.c:5461 [inline] extent_fiemap+0xd84/0x10d4 fs/btrfs/extent_io.c:5687 btrfs_fiemap+0x100/0x150 fs/btrfs/inode.c:8576 ioctl_fiemap fs/ioctl.c:219 [inline] do_vfs_ioctl+0x1bcc/0x2a38 fs/ioctl.c:814 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff800014b114a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311 2 locks held by getty/3727: #0: ffff0000d27c7098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff800018e202e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158 4 locks held by kworker/0:13/4176: #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:475 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1621 [inline] #0: ffff0001b47fe958 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x328/0x1e48 kernel/sched/core.c:6290 #1: ffff0001b47ebc48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x438/0x66c kernel/sched/psi.c:891 #2: ffff0001b47ec498 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x108/0x214 kernel/time/timer.c:946 #3: ffff80001860ee80 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x7c/0x4b0 lib/debugobjects.c:693 2 locks held by kworker/u4:7/4374: #0: ffff0000cee0d138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001ce77c00 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 1 lock held by syz-executor.3/6452: #0: ffff0000d66e80e0 (&type->s_umount_key#79){++++}-{3:3}, at: deactivate_super+0x100/0x128 fs/super.c:365 3 locks held by syz-executor.4/7385: #0: ffff0000d221ee58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff0000d221ee58 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x380/0xb60 arch/arm64/mm/fault.c:586 #1: ffff0000c0c76558 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x144/0x37c mm/memory.c:2892 #2: ffff0000e936b5a8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x530/0xde8 fs/btrfs/inode.c:8942 3 locks held by syz-executor.4/7387: #0: ffff0000d221ee58 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline] #0: ffff0000d221ee58 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x380/0xb60 arch/arm64/mm/fault.c:586 #1: ffff0000c0c76558 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x144/0x37c mm/memory.c:2892 #2: ffff0000e936b5a8 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x530/0xde8 fs/btrfs/inode.c:8942 =============================================